Book Image

Software-Defined Networking (SDN) with OpenStack

By : Sreenivas Voruganti, Sriram Subramanian
Book Image

Software-Defined Networking (SDN) with OpenStack

By: Sreenivas Voruganti, Sriram Subramanian

Overview of this book

Networking is one the pillars of OpenStack and OpenStack Networking are designed to support programmability and Software-Defined Networks. OpenStack Networking has been evolving from simple APIs and functionality in Quantum to more complex capabilities in Neutron. Armed with the basic knowledge, this book will help the readers to explore popular SDN technologies, namely, OpenDaylight (ODL), OpenContrail, Open Network Operating System (ONOS) and Open Virtual Network (OVN). The first couple of chapters will provide an overview of OpenStack Networking and SDN in general. Thereafter a set of chapters are devoted to OpenDaylight (ODL), OpenContrail and their integration with OpenStack Networking. The book then introduces you to Open Network Operating System (ONOS) which is fast becoming a carrier grade SDN platform. We will conclude the book with overview of upcoming SDN projects within OpenStack namely OVN and Dragonflow. By the end of the book, the readers will be familiar with SDN technologies and know how they can be leveraged in an OpenStack based cloud.
Table of Contents (16 chapters)
Software-Defined Networking (SDN) with OpenStack
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Preface

Components of traditional networks


Let us start our deep dive into SDN by looking at the components of a network device. Networking functionality can be broadly classified into three planes. These are as follows:

  • Data plane: The act of moving bits that constitute the packet from an incoming port to an outgoing port is the responsibility of the data plane. This is also known as the forwarding plane. For example, in Ethernet switches, packets coming in from one port are forwarded out via one or more of the remaining ports.

  • Control plane: Using the previous example, to forward the packet to the correct outgoing port, the data plane may need additional information. In the case of Ethernet switches, the outgoing port is identified using the destination MAC address learnt by the switch. This act of learning and building awareness about the network is the responsibility of the control plane. The control plane learns and gathers information about the network using various protocols. In a switch...